Liquid measuring device



Oct. 13, 1936. F. w. GUIBERT LIQUID MEASURING DEV/ICE GSheets-Shee't 1 Filed June 5, 1954 'NVENTOR FPU/7:75 BY oct. 13, 1936. F w GUIBERT :Lol-17,2553

LIQUID MEASUR ING DEVICE Filed June 5, 1934 6 Sheets-Sheet 3 M 3536 59 fw s /fff waff BY 40 ATTORNEY oct. 13, 193s. F, w @WEERT 2,057,333

LIQUID MEASURING DEVICE Filed June 5, 1934 6 Sheets-Sheet 4 7a e 57 85 S .3 l

ATTORNEY oct. 13, 1936. w. GUIBERT 2,057,333

LIQUID MEASURING DEVICE 6 Sheets-Sheet 5 Filed June 5, 1934 F icl. E /0/ NM@ a @faz m W@ 73 v,- M 1 `72 l@ f 49 E? Y? 43 50 E4 59 4 57 68 mvz-:NTOR

ATTORNEY oct. 13,A 1936. F, w, GUBERT 2,057,333

LIQUID MEASUR ING DEVICE Filed June 5, 1934 6 Sheets-Sheet 6 Ti?. ll

INVENTOR 'UNITED STATES PATENT OFFICE LIQUID DEVICE n Wlltel' Guibert, B'vel'l! Hill-l, Cll'lf.

Applica :i: lzallogo. '129,102

and the' like.

In the patent to Crosby, owned by this applicant', No. 1,918,828, issued July 25, 1933, for a Liquid measuring system, a device of this character is illustrated. In general it is one of the objects of this invention to provide a, modified form of such a meter, in order to enable the meter to operate more accurately and repeatedly in a thoroughly reliable fashion.

pleted before a succeeding batch can be started.

In other words, it is impossible to initiate a new cycle of operations until one cycle is completed.

This feature is of considerable importance for 5 example where measured quantities of water are to be delivered for a concrete mixture. In such work, the quantity of water delivered must be quite accurately iixed, in order to secure optimum results. If the operator can initiate a new cycle after a small amount of water is delivered in one y cycle, a batch of liquid corresponding to the new cycle can be added to the amount already delivered. In this way, the operator could increase the amount of the batch by any ldesired quantity, in spite of the instructions to use only a single batch of water for each mix.

crease of the batch by a complete measured batch would make his m supplemental ix so fluid as to be immediately detected as wrong, and his violation of orders would become apparent.

immediately It is another object of this invention to ensure accuracy in the measured batches. It is still another object of this invention to inch.

It is still another object of this invention to maintain the accuracy and the calibration oi the device irrespective of major variations of liquid pressure in the supply.

These results are accomplished by the use of a Y pilot valve of specic construction, for controlling n the main valve. This pilot valve is so arranged that, near the time the cycle is completed, the liquid delivery passage is closed in a number of steps, and not rapidly closed from a fully open position. In this way, a graded diminution in the rate of flow is eiected, which improves accuracy and eliminates harmful water-hammer, without the need of pressure regulators.

As a further guard against water-hammer or percussion, there is added a supplemental valve operable when the main valve is closing, to decrease the rate of iiow therethrough in a gradual manner.

This invention possesses many other advantages, and has other objects which may be made more easily apparent from a consideration of several embodiments of the invention. For this purpose there are shown a few forms inthe drawings accompanying and forming part ofthe present specification. These forms shall now be described in'detail, illustrating the general principles of the invention; but it is to be understood that this detailed description is not to be taken in a limiting sense, since the scope of the invention is best dened by the appended claims.

Referring to the drawings:

Figure 1 is a longitudinal sectional. view of a device incorporating the invention;

Fig. 2 is a top plan view thereof, a part of the cover being broken away;

Fig. 3 is an enlarged fragmentary sectional view taken along the plane 3-3 of Fig. 1;

Fig. 4 is an enlarged fragmentary sectional view takenA along plane 4-4 of Fig. 1;

Fig. 5 is a sectional view corresponding to Fig. 4 but showing the main valve at open position;

Fig. 6 is a detail plan view of a portion of the mechanism shown in Fig. 5;

Fig. 7 is a sectional view taken along plane 1 1 0f Fig. 1; 45

Fig. 8 is a sectional viewl taken along plane 8-8 of Fig. 1;

Fig.' 9 is an enlarged detail view of the apparatus for initiating the operation of the device; 50

Fig. 10 is a view similar to Fig. 9 but showing a diierent stage of operation of the apparatus; Fig. 11 is a view mainly in section showing the manner in which the closing of the valve is controlled; 55

Fig. 12 is an enlarged detail view taken along plane I2-I2 of Fig. 3;

Fig. 13 is an enlarged detail view taken along the plane I 3--I 3 of Fig. 3;

Fig. 14 is a detail view taken along the plane |4-I4 of Fig. 11; and

Fig. 15 is a view similar to Fig. 12 but illustrating one stage in the operation of the mechanism for setting of the device to deliver a denite amount of liquid.

The device includes a casing formed of a base portion I and a cover 2 appropriately fastened together (Figs. 1, 2, 3 and 4). As shown most clearly in Figs. 1 and 2, the base portion I has an inlet conduit connection 3 and an outlet conduit connection 4. Conduit 3 is connected to. a source of liquid such as the water mains of a water supply system; and conduit 4 is adapted to discharge the measured quantity of water or other liquid to the place where it is to be used, for example, into a concrete mix.

The apparatus is adapted to be operated to deliver in succession, measured quantities of liquid as byl the manipulation of a pull handle 5 (Figs. 1 and 2). .Once the handle 5 is pulled, the mechanism must operate through a complete cycle for delivering a predetermined amount of liquid through a metering device such as a liquid w meter 6 (Figs. 1 and 3). This ilow meter is accommodated in the base portion I. It is held in place on an annular shoulder 1 formed in the base portion I and its cover 8 is adapted to be secured, as by the aid of bolts 9, to a flange 1 adjacent the top of the base portion I.

The liquid entering into inlet conduit 3 passes through the metering mechanism, and thence through a meter outlet passage III and downwardly into a chamber II (Figs. 1, 4 and 5). The mechanism as shown in Figs. 1, 3 and 4 is inactive; that is, the valves to be hereinafter described are closed, preventing passage of water from chamber II to the outlet conduit 4.

There will now be described the valves which control the passage of liquid from the chamber II to the conduit 4. There is a main valve structure shown most clearly in Figs. 1, 4 and 5. In Figs. 1 and 4 the main valve is closed and in Fig. 5 the main valve is shown in its completely open position.

This main valve includes a circular housing I2 having a valve seat I3 supported in a ange I4 inside of the housing. This flange I4 is placed intermediate the chamber I I and conduit 4. The housing I2 forms virtually a cylinder for a piston valve'closure structure I5. In the position shown in Figs. 1 and 4, this piston valve structure is shown in closed position; and in Fig. 5 it is shown in open position. The cylinder chamber I6 is shown as disposed above the structure I5. It is formed by the aid of an insert bushing I1 and a cap member I8 which can be fastened to the ilange 1' as by bolts I9. Appropriate gaskets can be provided between member I8 and flange 1 to make the cylinder chamber I6 fluid tight.

Fluid pressure in chamber I6 is adapted to urge structure I5 downwardly in order to close the valve. The structure I5 includes a central stem 20 and an upper iiange 2|. The upper end of the stem 20 can be threaded as shown at 22 whereby it is possible to clamp a cup leather 23 between ilange 2| and a threaded clamp nut 24.

The valve closure proper is indicated by a reference character 25 (Fig. 5) which may be made of leather or yieldable material and held against the lower, flange 26 of the stem 20 as by the aid of the threaded member 21. 'I'his member 21 carries a number of downwardly extending guide vanes 28, entering into the valveseat ring I3.

To hold valve closure I5 in closed position, it is of course necessary to exert a fluid pressure downwardly upon the structure I5. The uid pressure of the source of supply can be utilized for this" purpose. 'I'hus from chamber II, uld from the source can pass through the hollow stem 20 into the chamber I6 by way of passages formed in a manner now to be described. The structure I5 carries a tubular extension 29. This extension 29 is threadedly engaged inside of the hollow stem 20 and has a top 30 having a tapered central aperture 3| therein. The bore of member 29 is in communication with chamber II by Way of a plurality of radial passageways 32 so that liquid can pass through these passageways and upwardly through member 29 and stem 20 into chamber I6.

Although aperture 3| is shown as controlled by a. needle valve stem 33, yet it is never completely closed because there are several bleeder passageways 34 (Fig. 6) that are formed as transverse slots to the main passageway 3|. Accordingly, if cylinder space I6 is not vented, fluid pressure is available at all times through these passageways 34 for urging the main valve to closed position.

By the aid of the needle valve mechanism it is assured that the valve closure structure I5 does not close too suddenly. During the initial closing movement the needle valve stem 33 is in the open position as shown in Fig. 5, and uid pressure is fully eiective to urge structure I5 downwardly. However, upon continued downward movement of structure I5, the needle valve stem 33 gradually closes port 3| and retards the building up of pressure in space I6. This building up is inally limited by the passage of liquid through the bleeder passageways 34.

The mechanism for accomplishing these results includes a guide bushing 35 threaded into extension 29 and forming a guide for the enlarged portion 36 of the needle valve stem 33. A compression spring 31 urges the stem 33 downwardly so that collar 38 rests against the inner end of bushing 35. However, the enlarged portion 36 of the needle valve stem 33 carries an adjustable contacting member 39, such as a screw. 'I'his contact member is adapted to contact with the bottom wall 40 of chamber II, sq that upon a predetermined downward movement the needle valve 33 is urged relatively upwardly,

compressing spring 31 and causing the tapered end of the needle stem to enter into aperture 3|. 'Ihis position is shown in Figs. 1 and 4.

Since aperture 3| is gradually closed by this means in accordance with the downward movement of the closure structure I5, the downward movement of this closure structure is retarded and the valve is eased to closed position.

In order to open the main valve by upward movement of structure I5, fluid pressure is utilized acting underneath the closure member 25. Normally this luid pressure is overcome by the iluid pressure existing in cylinder space I6; but when the cylinder space I6 is vented, the iluid pressure in chamber II is immediately eiective to move the iluid closure structure to the position indicated in Fig. 5.

Venting of the cylinder space I6 to eiect this result is accomplished by the aid of a pilot valve structure shown most clearly in Figs. 1, 4, 7, l0,

and i1.` This pilot valve structure includes a substantially cylindrical valve body member 4I. This body member can be appropriately fastened as by the aid of a base 42 to the top of the cap member I6. The left hand end of body member 4l is closed by a cap 43 threaded therein. This cap also serves as a guide for the stem 44 of a valve closure member 45. This valve closure member, as shown most clearly in Figs. 10 and 11, is urged to closed position against a valve seat `bushing 46 as by the ald of a compression spring 41. The valve seat bushing 46 is shown as threaded into an intermediate ange 48 in the valve body 4I. 'I'he space 49 to the left of the seat 46 is in communication with the cylinder space `I6 as by way of the passageway 50 (Figs. 1, 10, and 11). With closure 45 seated as shown in Fig. il, the passageway 56 is closed and fluid pressure can eiectively build up in the cylinder space I6 to hold the valve closure structure`i5 in the closed position. 1

However, a mechanism is provided for moving the closure 45 to the left in order to unseat it from the bushing 46. When this occurs, liquid from cylinder chamber I6 can pass through the bushing 46 as well as through space 5I and past valve seat 52 into the chamber 53. This chamber is in communication with a passageway 54 that connects into the outlet conduit 4. Appropriate apertures of course are 'provided through the valve vbody 4i for completing passageways 50 and- 54 into the interior of this'valve body.

Valve `seat 52 as shown most clearly in Figs. 10 and 11 is intended to cooperate with a valve closure member 55. This closure member is shown lifted from its seat in Figs. 10 and 1l, but is shown as closed in Fig-7. `This closure member 55 is shown as carried by a rod or stem 56. This rod or stem passes through a packing gland structure 51 and has an extension 58 which can serve, when rod 56 is moved to the left, to unseat closure 45 from the valve seat 46. The same motion toward the left serves also to unseat closure 55 from seat 52 as by the aid of an enlargement or collar 58. Closure 55 furthermore has a series of through passageways 60 (Fig. 10) which is adapted to be closed by a collar 6I shown as integral with stem 56 and having a sloping face cooperating with the sloping face of closure 55. The arrangement is such that closure 55 is loosely mounted between the collars 59 and 6|. Normally a compression spring 62 located inside of the valve body 4I acts against collar 63 on stem 56 urging it to the right so that all of the various valve` closure members are seated. This is the position indicated in Fig. '7. Under such circumstances member 45 is seated on seat 46, collar 6i closes apertures 60 and closure 55 is seated on seat 52.

The fully opened position is shown in Fig. 10. In this position valve extension 58 of valve stem 56 is holding closure 45 away from seat 46. Collar 6I is no longer urged against the closure member 55; and closure member 55 is lifted from seat 52 by collar 59. The structure 52-55-60- 6i located in chamber 5I controls the passage duit 64 as shown most clearly in Fig. 4 is in communication with chamber Il. Thus conduit 64,

chamber I, chamber 53, and passageway 54 forms a by-pass or a parallel path for liquid delivered through the meter 6. Accordingly, while valve closure 55 and collar 6i are in the open position of Fig. 10, liquid such as water or the like can still flow through the meter to outlet :at the interface.

conduit 4, althomh at adiminished rate, even after the main valve closes. The main valve closes first by virtueof the fact4 that extension 56 recedes from closure 45, permitting this closure to seat in seat 46 and thereby closing the relief vent from cylinder chamber i6. This action takes place prior to the closure of the communication between conduit and chamber 53. This intermediate position is shown in Fig. l1, the stem 56 having passed a, suillcient distance toward the right to permit seating ot closure 45, but not far enough to stop the flow of liquid through conduit 54.

In this way the termination of the delivery cycle isl approached gradually. At first liquid passing through meter 6 can pass directly through the main valve structure to conduit 4 and some of it can also pass from chamber Il through conduit 64, pilot valve 4I and conduit 4. This by-pass is left own as the main valve closes and is closed in two steps; that is, two steps which comprise the of closure member 55 on the seat 52 and then the seating of collar 6I in closure 55.

As is well understood, appropriate gaskets can be placed between the pilot valve body 4i and the member i8. Furthermore, as shown most clearly in Fig. l, a coupling bushing 65 can be inserted in passageway 54 and can overlap the partitionline between member I8 and ilange 1 so that thegasket between these two parts is not subjected to any material uid pressures It is also to be noted that the cylinder bushing I1 for forming the main valve cylinder i6 accomplishes a. like purpose.

As shown most clearly in Figs. 1 `and 7, the

valve body 4| has a slot es at its right hand end. 'I'he collar 63 extends into this slotted portion and has a horizontal slot extending therethrough indicated in Figs. and l1 by reference character 61. This structure forms a convenient means for moving the valve stem 56 toward the left to initiate a cycle of liquid delivery operation. For example, a lever arm 68 (Figs. 1, '1, 9, 10, and 11) can be pivotally supported on member I8 as by the aid of a pivot screw 69 (Fig. '7). This lever extends through the slot 61 and has an operating end 10. In order to connect this lever arm 66 with the stem 56 that when lever 66 is turned in a counterclock- Wise direction from the closed position of Fig. '1, it will exert a force on pin 12 and thereby urge the stem 56 toward the left.

This operation of lever 68 is accomplished by the manipulation of the handle 5 extending outside of the casing l-2 andfor this purpose a mechanism is providedv which will be described shortly.

After the lever 68 has moved to its extreme counterclockwise position indicated in Fig. 10 against the action of springs 41 and 62, the various valve structures in the pilot valve are fully closed only after the meter 6 delivers a prededetermined and adjustable amount of liquid. In order to hold the stem 56 in the open position of Fig. 10, use is made of a pair of abutments which move into engaging position automatically. These abutments are shown most clearly in Figs. '1, 10, 11, and 14. One abutment comprises the arm 'I3 pivoted on a stationary pivot 14 locatedA in an appropriate portion of the apparatus. This ann while the pilot valve structure is closed (as shown in Fig. 7) is urged as by a tension spring 'il against the side of collar 63 which extends slightly beyond the right end of valve body 4|. However, as soon as stem 56 moves toward the left by a suilicient distance, the arm 13 is p'ulled by spring 16 to contact with the end of the fiat extension 16 formed on the end of the collar 63. This position is shown in Fig. 10 which shows the arm 13 in the valve holding position. The arm 13 is stopped against further clockwise rotation by a stationary abutment 11 which is also supported on a stationary part of the apparatus.

Thus valve stem 56 is held in the fully opened position of Fig. 10 until the arm 13 is moved downwardly and out of the path of the extension 16. However, in the meanwhile the upper abutment 18 also pivoted at 14, has moved to a position overlying arm 13 and against the stop 11. This is accomplished by the vaid of a tension spring 19. 'This abutment or arm 18 is slightly shorter than arm 13 so that after arm 18 is moved out of the path of the extension 16. the stem 56 is not permitted to move to the fully closed position of Fig. 7. Instead it moves to the position shown in Fig. 11 against the end of the arm 11. In this intermediate position, valve closure 45 has been allowed to seat on valve seat 46 to cause the main valve structure iii-I6 to close. The by-pass through conduit 64 is still open since closure 55 has not seated on seat 52. When arm 18 is depressed two stages of the closing of valve 55-52 are provided for by the aid of a notch 80 in the end of the arm 18. The extension 16 rst moves into the notch 80, causing valve closures 55 and 6| to close partially; and finally to close completely when arm 18 is moved completely out of the path of extension 16. As shown in Fig. '1, the valves are completely closed and the cycle of delivery is completed.

The manner in which the meter 6 accomplishes this gradual closing will be described hereinafter. For the present it can be noted that there is a succession of steps near the closing of the delivery cycle reducing in steps the rate of delivery, so that injurious water-hammer or percussion is eliminated.

'I'he manner in which lever 68 is moved to the left to initiate a liquid delivery cycle will now be described. This is best illustrated in connection with Figs. 4, 7, 9, and 10.

As shown most clearly in Fig. 4, the member I8 has a pair of bracket extensions 8|82 connected by a plate 83. On this plate there is pivotally supported an actuator structure 84, as by the aid of a pivot pin 85. This pivot pin 85 is joined to the actuator body 86 and extends through the plate 83. This actuator body is urged to rotate in a clockwise direction as by the aid of a. tension spring 81. In the upper face of the body 86 there is a groove 88 in which is slidable the actuating member proper 88. Disposed over the member 88 is a cover plate 80, Figs. 4, 7 and 10. In Fig. 9 this cover plate is shown as removed. 'Ihe cover plate also has a slot 8| through which pin 82 extends. 'Ihis pin is fastened to the member 88 and a tension spring 93 connects pin 82 and a pin 84 on the cover member, to urge the member 89 resiliently to a retracted position shownin Fig. 7. There is a limit to the clockwise rotation of the actuator structure in response to the action of spring 81 as by the aid of a stop member 85.

The arrangement is such that the actuating structure can be rotated in a counterclockwise direction in order to store energy in spring 81 and when suflicient energy is stored. the member 89 is extended to its operating position as indicated in Fig. 10. This member 88 has a tip 96 adapted to engage with the cam surface 81 on lever 68 and on continued movement toward the left, it will urge lever 68 to the position indicated in Fig. 10. In this position the tip 86 passes by the end 10 of lever 68 and takes the position of Fig. 7.

In order to wind up this spring 81 and to extend actuating member 88, use is made of a pull rod 91' connected to the handle 5. This pull ro'd is guided on the bracket extensions 8| and 82 as well as by the cap member 98. Tension spring 88 is anchored to a stationary bracket on cap 98 and at its other end it is anchored to the pull rod 81. 'Ihis tension spring 89 urges the pull rod 81' toward the right to assume the position shown in Fig. '7. Its movement toward the right is limited by a stop |0| fastened to the pull rod 81. 'I'his pull rod has a shoulder |02 adapted to contact with the end of actuating member 88 when it is in the retracted position due to the action of spring 83.

It is apparent that the pulling of rod 91 toward the left and its engagement with the member 88 will cause a rotation in a counterclockwise direction of the rotatable member 86. An intermediate position is shown in Fig. 9. When pull rod 91 reaches a position toward the left sufiicient to enable it to urge member 89 downwardly against the action of spring 93, the tip 96 of member 88 projects outwardly. Furthermore, when member 89 is moved downwardly, the pull rod 81 can no longer engage the actuating structure; spring 81 is free to expend its stored energy and to snap the actuating structure against stop 95. This action is like a trigger action, tip 86 acting on the cam surface 81 and finally passing over the end of the lever 68 past cam surface 10.l The instant when tip 96 passes the end 10 is shown in the position of Fig. 10.

Since lever 68 after it is rotated, is held in the position shown in Fig. 10, it will not be in position to be contacted by tip 86 unless the pilot valves are closed; consequently, once these valves have been opened and a cycle of operation initiated, movement of pull rod 81 can have no further effect upon the mechanism until the cycle of operation-is completed and the pilot valves have closed, returning lever 68 to its initial position.

If pull rod 91 is reciprocated in its'guides it merely moves the actuating structure, but since tip 96 passes over the end 10 no action can take place (see Fig. 9). By this means it is assured that only complete cycles of operation can be performed, and no new cycle can be started until after the preceding cycle is completed.

There will not be described the mechanism by the aid of which the delivery of the liquid is stopped upon a predetermined quantity passing through conduit 4.

As shown most clearly in Figs. 1 and 3, the meter 6 has a shaft |03 which extends out of the casing of the meter and which is journaled in a cap member |04. This cap member |04 is fastened to the cover 8 of the meter and serves to support a stationary stub shaft |05.

The shaft |03 is journalled in the cap member |04 and carries a driving member such as a pinion |06. This pinion in turn drives a gear |01 which extends through the opening |04' provided in cap member |04 so as to enable pinion |06 and gear |01 to be in mesh. This gear` |01 is appropriately fastened to a shaft journalled in a boss |08. This shaft carries a pinion |09 meshing in turn with a gear wheel ||0. This gear wheel is fastened to a disc member shown most clearly in Figs. 8, 11, 12, 13, and 15. The gear can be fastened in any appropriate manner to the disc member as by the aid of screws ||2 (Fig. 3). Both the gear ||0 and disc are freely rotatable on the stationary stub shaft |05. Accordingly, it is apparent that the angular motion of disc is in accordance with the volume of liquid passing through the meter, shaft |03 being rotated by the passage of the liquid through the meter.

Disc serves to actuate an arm ||3 `which includes a structure for actuating the abutment arms 13, 18. This arm` ||3 is shown in Figs. 1, 3, 8, 11, 12, 13, 14, and 15. This arm is adapted to be detachably engaged with the disc Furthermore, the clutching between arm I3 and disc is such that upon complet-ion of the required volume of liquid the arm ||3 is disengaged from the disc and is permitted to rotate back to its starting position. The mechanism for rotating the arm ||3 back to its starting position includes a helical spring ||4 (Fig. 3). The inner end of this spring is fastened to the stub shaft |05. The outer end thereof is attached to inner cylindrical surface of a counterbored boss ||5 which forms a part of the arm ||3 (Figs. 3 and 8). A cover plate ||6 can be fastened over the hollow boss |I5 in order to ensure that the spring I4 will be retained in place.

The mechanism for detachably engaging or clutching the disc |I| to the arm ||3 includes a series of fine teeth ||1 on the outer periphery of disc These are adapted to be engaged by a pawl member H8. This member is shown to best advantage in Figs. 3, 11, 13, and 14. It is accommodated in a slot ||9 in the upper face of arm ||3 so as to be slidable therein. It has a .downward extension |20 which extends over the edge of disc and has inwardly directed teeth |2| (Fig. 13) adapted to engage with the teeth H1. Pawl member 8 is urged to engagement to disc as by the aid of a tension spring |2|. This tension spring is also mounted in groove ||9. In one end it engages in the eye |22 on the inner end of pawl ||8. At the other end it is anchored to a pin |23 fastened in the bottom of groove H9. A cover plate |24 can be used to cover the groove ||9.

Arm ||3 is thus detachably clutched to the disc However, it can be unclutched or disengaged as by the aid of a crank lever |25. This lever |25 is pivoted on an actuator extension |26 carried by arm I3. This is shown most clearly in Figs. 11, 12, and 13. One arm of the lever such as |21 (Fig. 11) extends into a slot |28 formed near the end of the pawl I8. Accordingly when lever |25 is rotated in a counterclockwise direction as viewed in Figs. 11, 12, and 15, the pawl I|8 is moved radially outwardly against the tension of spring |2I.

ing pawl ||8 in disengaged position includes a catch |30 pivoted on a vertical axis on one side of slot |I9. This catch |30 is accommodated in a slot |3| (Fig. 13) in the side ofvarm H3 and has extension |3|' adapted to enter back of shoulder |32 and urged toward engaging position by the aid of a small tension spring |33 (Figs. 8 and 11) Accordingly upon actuation of lever arm |25 to release pawl ||8 the catch is engaged and holds the arm ||3 out of driving relation with disc However, it is possible to free pawl ||8 as by pressing upon the extension l|34 of the catch |30. This, however, is not accomplished until after the arm ||3 has rotated in a clockwise direction by a predetermined amount corresponding to such angular motion of disc I as represents the amount of liquid to be delivered in one cycle. The manner in which the release of catch |30 is accomplished will be described hereinafter.

Arm ||3 in its counterclockwise motion carriesA in Fig. 11 and force abutment arm 13 out of engagement with extension 16 of pilot valve stem 56. It will also permit this extension 16 to engage the upper arm 18. As heretofore stated, this causes the valve to assume the position of Fig. 11, whereby the main valve is closed but the by-pass through conduit 64 is still open. Accordingly the rate of travel of liquid is reduced and arm ||3 moves more slowly. This urging of the arm 13 out of the path of extension 16 is against the resilience of spring 15. y

Upon predetermined downward movement of arm 13 a pin abutment |31 carried by member |36, contacts the upper arm 18. The point vof contact is illustrated in Fig. 11. Upon continued rotation of disc arm 18 is urged downwardly to permit extension 16 to move to the notch 80;

this reduces the flow of liquid through the bypass 64. Shortly thereafter arm -18 is moved far enough down to permit extension 16 to move outwardly and close all the valves as shown in' Fig. '7.

This outward movement toward the right of extension 16 also serves to trip the-lever arm |29. This action is shown most clearly in Fig. 1. It is there seen that the extension 16 has an L-shaped projection 16' which moves to the right and contacts the arm |29 to move it inwardly. This frees the pawl ||8 which is held in the freed position by catch |30.

Should the delivery of the water for some reason be continued as by failure of the valves, a safety trip is provided. This is shown most clearly in Figs. 11 and 14. It comprises an arcuate extension |38 formed integrally with the bracket 11. Upon continued movement of arm ||3 past the valve closing position, this arcuate extensiorrv |38 engages the lower end of arm |29 and positively releases the pawl ||8.

As soon as arm ||3 is thus released, the helical rection. This reverse rotation is limited by a stop |39 (Figs. 1, 12, 13, and 15). 'Ihis stop has a surface |40 adapted as shown in Fig. 12 to conspring I|4 urges the arm ||3 in a clockwise ditact with the right hand end of the catch |30. The pressure of spring ||4 is suicient to rotate catch |30 in a counterclockwise direction as viewed in Fig. 12 and pawl ||8 is pulled into engagement with disc by spring |2|'.

The stop |39 is formed integrally as a part of the adjustable abutment |4| (Figs. 3, 7, 12, 13, and l5). This member |4| is slidable in a slot |42 in an arm |43. 'Ihis arm |43 is rotatable over a hub |44 disposed on stub shaft |05 and carrying a stationary disc 46. This disc is held in stationary position as by the aid of a retaining key |41 (Fig. 3) engaging in slots cut in the end of the hub |44 as well as in the end of stub shaft |05, these slots extending diametrically across the hub and the shaft.

Arm |43 is carried by its hub |48 and is freely rotatable about the axis of shaft |05. It is, however, retained in any adjusted position by the aid of ne ratchet teeth |49 in the periphery of the stationary disc |46. These teeth are engaged between corresponding teeth |50 on the inner surface of the member |4|. A cover member |5| extends over the slot |42 and is fastened as shown in Fig. 3 to the top surface of member |4|. This cover member |5| has a slot |52 therein. Through this slot extends an anchor pin |53 fastened in the top side of arm |43. A corresponding anchor pin |54 is fastened to the cover |5|. A tension spring |54' connects the two pins and resiliently urges the teeth |50 into engagement with the teeth |49 on stationary disc |46.

The degree of iineness of the teeth between the inter-engaging pawl ||8 and disc as well as the teeth |49 and |50 can be made such that it is possible to set the apparatus for delivering liquids very close to the desired quantity. the maximum error being equivalent to one-half the pitch between the teeth. About 500 or 600 such teeth can easily be formed and even a greater degree of neness can be obtained. In this way an accuracy of about one-quarter of a degree in the angular positioning of the arms can be accomplished.

The apparatus is so arranged that the abutment surface |40 can be moved in either direction along the stationary disc |46 so as to determine the volume of liquid delivered in one cycle. It is apparent that the farther the arm |43 is movec` in a clockwise direction, the greater the delivery of liquid must be before arm 3 arrives at its pilot valve controlling position for terminating the cycle. In order to permit setting of the angular position of arm |43, use is made of a bell crank lever |55 (Fig. 3). 'Ihis arm is pivoted on a. pin |56 carried in brackets |51 formed integral with hub 48 of arm |43. The vertical arm of bell-crank lever |55 engages an upwardly turned member |58 on cover member |5|. Downward movement of the horizontally extending arm thus causes spring |54' to be stretched and the abutment member to be disengaged from the stationary disc |46.

The mechanism for accomplishing this purpose includes a thrust pin |60 mounted for sliding movement in a. projection |6| of the hub |48. This thrust pin |60 is in engagement with the horizontal arm |59 and is adapted to be urged downwardly as by the aid of a handle member |62. This handle member |62 is pivoted in a slot in the projection |6| as on pin |63 and when handle |62 is raised, the end surface |64 of this handle urges thrust pin |60 downwardly. When this is accomplished, a pointer |65 can be grasped as by the aid of a finger hold |66 for moving a tubular support |10 held in the cover 2.

the pointer and arm |43. Ihe pointer |65 for this purpose is fastened to the extension |6| as by being provided with a split hub |61. 'Through this hub extends a clamp screw |60.

Pointer |65 is adapted to cooperate with a stationary scale |69 (Fig. 2) which can be marked in gallons, pints, quarts or the like. This stationary dial can be supported in the bottom of In normal operation a hinged locked cover |1| is disposed over the setting means and it can be held against tampering by the aid of a lock |12 in a well known way.

It is also advisable to provide a removable cover plate |13 fastened to the top of cover 2 to permit access to the pilot valve mechanism.

When cover |1| is opened. the pointer |65 can be moved to the desired position and handle |62 is returned to the horizontal position shown in Fig. 3 which causes the abutment |4| to be clutched to the stationary disc |46.

It will be obvious that after the completion of a cycle arms ||3 and |43 will be close together as shown in Fig. 3 and the teeth on pawl arms |I8 and 4| will be in engagement respectively With the teeth ||1 on disc and teeth |49 on disc |46. When it is desired to move arm |43 to a new setting, it will be necessary not only to disengage pawl |4| from teeth |49, but also pawl ||8 from teeth ||1; for otherwise it would not be possible to move arm |43 to reduce the quantity of liquid delivered (counterclockwise movement) at all on account of arm ||3 being locked to disc or if arm |43 was moved to increase the quantity of liquid delivered, arm I3 would retain its setting and cause the first batch of liquid to be short.

Accordingly there is provided a slot |11 in member |4| having an abutment surface |16 adapted to be engaged by a projection |15 on pawl member ||8. This forms a definite setting for arm ||3 in relation to the adjustable arm |43, and'insures accuracy of measurement. The inner surface of slot |11 has an inclined portion |18, arranged to engage the upper corner of projection |15. The arrangement is such that when member |4| is moved to bring teeth |50 out of engagement with disc |46, projection |15 is conned between surfaces |16 and |18 and also moved outwardly, thus freeing pawl member ||8 from teeth I1. The tension of spring |2| serves to hold the projection 15 in engagement with the surfaces |16 and |18, which insures that arms ||3 and |43 will be moved simultaneously for the setting operation. After this setting is accomplished, open end |19 of slot |11 is so positioned and of such width that projection |15 may pass through it Without hindrance as arm ||3 is carried in a counterclockwise direction by rotation of wheel in response to movement of the meter.

In the event of the meter stopping before the completion of a cycle, due to failure of the water supply for instance, or for any other reason, arm ||3 will be in some position between its initial and tripping positions, with pawl arm ||8 engaging teeth ||1. If it is desired to return it to its original setting, trip lever |25 may be pressed manually to disengage pawl arm |8, and helical spring |2| will return it, as before. If, however, it is desired to reset arm |43 to some point necessitating the movement of arm ||3 in counterclockwise direction, means must be provided for forcing projection |15 into slot |11, when member |4| is in its outer position with teeth |50 out of engagement with teeth |49. Such a condition is illustrated in Fig. 15. A cam |14 is formed on the forward side f member |4| so as to engage the inner surface of projection |15, which may be slightly bevelled. and force pawl member H8 outwardly and guide projection |15' into slot |11, where it will be forced against abutment surface |16 by the incline |18.

In order to make projection |15 move into the slot |11 formed in the member MI, it may be necessary to move the arm |43 rather rapidly to impart considerable momentum thereto.

It is thus apparent that movement of the arm |43, which determines the amount of liquid delivered in one cycle can be adjusted in either direction without interference from arm I3.

vA short review of the mode of operation of the device can now be set forth.

In order to set the device into operation, the handle member is pulled toward the left as viewed in Fig. 1. This swings the actuator member 89, causing it to move the pilot valve lever 68 upon a sufficient outward movement of the handle. This pilot lever 68 is then inthe position shown in Fig. arms 13 and 18 being in such a position as to hold the valve in the fully opened position. Liquid can then ilow through the meter 6 to chamber past valve structure l5, and also through by-pass pipe El. This continues until arm ||3 moves in a counterclcckwise direction to move the abutments 13 and 18 successively out of the path of the projection 16 of the pilot valve stem 55. First the main valve is closed by virtue of the operation of closure 45 and then later the by-pass il is closed in two steps. Immediately thereupon the projection 16' trips lever arm |29 and arm H3 is free from disc It is held in the freed position by the catch |30. The arm |I3 then moves so as to urge the free end of catch I3. against abutment |39. When this occurs, the catch |30 is released and spring |2| pulls the pawl IIB in contact with the wheel III. 'I'he apparatus is now in condition for starting a new cycle.

I claim:

1. In a device of the character described, liquid delivery means, a. lever arm for initiating the operation of said means, by movement of the lever in one direction to -a denite position, means whereby said lever is retained in said position until the completion of a delivery cycle, an actuator for said lever, an energy storing device for operating said actuator, and means for storing and releasing said energy to cause the actuator upon release of the energy to engage and to move the lever to its cycle initiating position, said position being out of the inuence of the actuator.

2. In a device of the character described, liquid delivery means, a. movable member for initiating the operation of said means, by movement of the member to a denite position, means for retaining said member in said position until the completion of adelivery cycle, and mechanism for moving said memberto said position,

comprising an actuator, an energy storing de- 5. In a device of the character described, means Y for delvering a succession of measured quantities of liquid, said means including a main valve, a

pilot valve for controlling the main valve, said liquid being delivered partly through the main valve and partly through the pilot valve, and means for operating said pilot valve to close the main valve first, and then to close the pilot valve.

6. In a device of the character described, means for delivering a succession of measured quantities of liquid, said means including a pair of outlets through which liquid is delivered in parallel, means for rst closing one of the outlets, and means for subsequently closing the other outlet in a plurality of stages.

7. In a device of the character described, a mechanism operating to deliver a measured quantity of liquid, a main valve having a closure,

4through which liquid is delivered, and a control pilot valve for the main valve, for controlling the liquid pressure on the closure to cause it to move to closed position, and an auxiliary valve operated toward closingposition in accordance with the movement of the closure toward closing position, said auxiliary valve controlling the rate of passage of liquid through the closure.

8. In a device of the character described, a mechanism operating to deliver a measured quantity of liquid, a main valve having a closure, through which liquid is delivered, and a control pilot valve for the main valve, for controlling the mechanism operating to deliver a measured quantity of liquid, a main valve having a closure adapted to be operated by liquid pressure respectively on opposite sides to move it toward open and closed position, and through which liquid is delivered, a pilot valve for controlling said main valve, said pilot valve having a discharge port, as well as two intake ports, a valve closure controlling one intake port, said intake port being connected to the space on that side of the main valve closure in which liquid pressure is utilized tol close the main valve, and a second valve closure controlling a by-pass around the main valve and through which by-pass some of the liquid is delivered by way of said outlet port, and means controlled by the mechanism for closing said valve closures.

11. In a device of the character described, a mechanism operating to deliver a measured quantity of liquid, a main valve having a closure adapted to be operated by liquid pressure respec- CII tively on opposite sides to move it toward open andclosed position, and through which liquid is delivered, a pilot valve for controlling said main valve, said pilot valve having a discharge port, as well as two intake ports, a valve closure controlling one intake port, said intake port being connected to the space on that side of the main valve closure in which liquid pressure is utilized to close the main valve, and a second valve closure controlling a by-pass around the main valve and through which by-pass some of the liquid is delivered by Way of said outlet port, and means controlled by the mechanism for closing said valve closures, said second pilot valve closure being closed after said iirst pilot valve closure.

12. In a liquid measuring device, a member movable in accordance with the quantity of liquid being delivered, a valve mechanism, and means for causing the valve mechanism to close upon predetermined travel of said member, comprising an actuator, a releasable catch mechanism for connecting the actuator to the member, said member moving said actuator to valve closing position, means urging said actuator in the opposite direction, and means responsive to the closing of the valve for releasing said actuator.

13. The combination as set forth in claim 12, with the addition of an adjustable stop for limiting the return movement of the actuator, and means associated with the stop for causing said actuator to be placed in driving relation with said member.

14. In a liquid measuring device, a member movable in accordance with the quantity of liquid being delivered, a valve mechanism, and means for causing the valve mechanism to close upon predetermined travel of said member, comprising an actuator, a releasable catch mechanism for connecting the actuator to the member, said member moving said actuator to valve closing position, means urging said actuator in the opposite direction, means for releasing said actuator from the member, and operated in response to the movement of the actuator to valve closing position, means for-holding said actuator in released position, and a stop toward which the actuator is urged upon being released, said stop having provisions for causing said actuator to be placed in driving relation with the member when said actuator moves to the stop.

15. In a liquid measuring device, a member movable in accordance with the quantity of liquid being delivered, a valve mechanism, and means for causing the valve mechanism to close upon predetermined travel of said member, comprising an actuator, a releasable catch mechanism for connecting the actuator to the member, said member moving said actuator to valve closing position, means urging said actuator in the opposite direction, means responsive to the closing of the valve for releasing said actuator, and means for reengaging the actuator with the member upon a predetermined reverse movement.

16. In a liquid measuring device, a member movable in accordance with the quantity of liquid being delivered, a valve mechanism, and means for causing the valve mechanism to close upon predetermined travel of said member, comprising an actuator, a releasable catch mechanism for connecting the actuator to the member, said member moving said actuator to valve closing position, means urging said actuator in the opposite direction, means responsive to the closing of the valve for releasing said actuator, and

means for reengaging the actuator with the member upon a predetermined reverse movement, comprising a releasably xed arm, means for releasing said arm to adjust its position, and

means placed in operative position when the arm is released, for causing the actuator to be released from the member and to move with the arm during adjustment movement of the arm.

17. In a liquid delivering device, means forming an inlet conduit, means forming an outlet conduit, and a valve interposed between the conduits, said valve having a main valve closure member, and a supplemental valve closure carried by said member and actuated toward closing position by the force acting to close the main valve closure.

18. In a liquid delivering device, means formr'ing an inlet conduit, means forming an outlet conduit, and a valve interposed between the conduits, comprising means forming a main Valve seat, a main valve closure movable toward said seat, said closure having an aperture therethrough, a supplemental valve closure adapted to vary the extent of opening of the aperture, and means whereby said valve closure is operated to vary said opening near the end of the closing movement of the main valve closure.

19. In a liquid delivering device, means forming an inlet conduit, means forming an outlet conduit, and a valve interposed between the conduits, comprising means forming a valve seat, a main valve closure movable toward said seat, means forming an auxiliary valve, and means whereby said auxiliary valve is gradually actuated to cause it to be nearly closed when the main closure closes.

20. In a liquid delivering device, means forming an inlet conduit, means forming an outlet conduit, means forming a valve closure seat between the conduits, a fluid pressure operated valve closure cooperating with said seat, and means whereby Huid pressure from the inlet conduit can beeiective to close the valve, including an auxiliary valve having an auxiliary closure member and controlling an aperture in the main closure member, and urged to nearly closed position near the end of the closing movement of the main closure.

21. In a liquid delivering device, means forming an inlet conduit, means forming an outlet conduit, means forming a valve closure seat between the conduits, a fluid pressure operated valve closure cooperating with said seat, and means whereby lluid pressure from the inlet conduit can be eiective to close the valve, including an auxiliary valve having an auxiliary closure member and controlling an aperture in the main closure member, and means yieldingly urging said auxiliary closure member toward open position, said auxiliary member having a portion adapted to contact with a. stationary part of the apparatus near the end of the closing movement of the main valve closure, for causing it nearly to close the auxiliary valve upon closure of the main valve.

22. In a liquid delivering device, means forming an inlet conduit, means forming an outlet conduit, and a valve interposed between the conduits, said valve having a main valve closure member, and a supplemental valve closure carried by said member and actuated toward closing position by the force acting to close the main valve closure, comprising a needle valve cooperating with an aperture through the main valve closure.

23. In a liquid delivering device, means forming an inlet conduit, means forming an outlet conduit, and ay valve interposed between the conduits, said valve having a main valve closure member, and a supplemental valve closure carried by said member and actuated toward closing position by the force acting to close the main valve closure, comprising a needle valve cooperating with an aperture through the main valve closure, and having a portion arranged to contact with a stationary -part of the apparatus near the end of the closing movement of the main valve closure, for causing it to enter farther into the aperture as the main valve closure continues its movement.

24. 'Ihe combination as set forth in claim 23, in

which the aperture for the needle valve is so ar-` ranged that the needle valve does not completely close it upon completion of movement of the main valve closure.

25. In a liquid delivering device, a main valve, said main valve having means for urging it to closed position by fluid pressure, means forming a by-pass around the main valve means, and a pilot valve for controlling the pressure for operating the main valve as well as a separate means for controlling said by-pass.

26. In a liquid delivering device, a main valve, said main valve having means for urging it to closed position by fluid pressure, means forming a by-pass around the main valve, and a pilot valve for controlling the pressure for operating the main valve as well as for controlling said bypass, said pilot valve including a pair of valve elements adapted to close in succession, the first to close causing the closing of the main valve, and the last to close controlling said by-pass.

27. In a device of the character described, a liquid delivery means, a member for initiating the operation of said means, means i'or retaining said member in operative position until the completion of a delivery cycle, and mechanism for moving said member to said position, comprising a movable actuator, said actuator being adapted to engage the member and to pass beyond it so that said actuator is ineilective to engage said member until said member returns to inactive position.

28. In a device of the character described, liquid delivery means. a member for initiating the operation of said means, and means for holding said member in operative position until the completion of a delivery cycle, comprising a movable abutment. means yieldingly holding said abutment in holding position, and means for moving said abutment out of operation to permit said member to return to inactive position.

29. In` a device of the character described, .liquid delivery means, a pilot valve controlling the operation of said means, said pilot valve having an auxiliary movable valve stem as well as resilient means for urging said stem toward closed position, means for moving said stem to open position, a plurality of movable means ior holding said stem in open and in partly open position, and means i'orl successively moving said plurality of means to permit closing said valve in a number o! steps. y

30. In a device of the character described, liquid delivery means, a main valve, means forming a by-pass around said main valve, a pilot valve controlling the operation of said valve. said pilot valve having an axially movable stem as well as resilient means for urging said stem toward valve closed position, said pilot valve also controlling the by-passv around the main valve, a plurality of movable means, one for holding said stem inV valve opening position as well as in position to open the by-pass, and another for holding said stem in valve closing position as well as in position to close the by-pass, and means for successively moving said plurality of means out of holding relation to the stem.

31. In a device of the character described, liquid delivery means, means for controlling the operation of said deliverymeans, including a movable member as well as means urging said member to a position to terminate the cycle of delivery, movable means holding said movable -member in liquid delivery position, and means moved in accordance with the quantity of liquid delivered, for releasing said controlling means at the end of the cycle, comprising a releasable member yieldingly urged to a cycle starting position, and released by movement of the controlling means to its cycle terminating position.

32. In a device of the character described, liquid delivery means, means for controlling the operation oi.' said delivery means, including a movable member as well as means urging said member to a position to terminate the cycle of delivery, movable means holding said movable member in liquid delivery position, and means moved in accordance with the quantity of liquid delivered, for releasing said controlling means at the end of the cycle, comprising a releasable member yieldingly urged to a cycle starting position, and released by movement of the controlling means to its cycle terminating position, and a rigid member in the path of' movement of the releasable member beyond its cycle terminating position, for positively releasing said member.

33. In a device of the character described, liquid delivery means, means for controlling the "operation of said delivery means, including a movable member, and means moved in accordance with the quantity of liquid delivered, for causing said controlling means to terminate the cycle of delivery, comprising a rotatable member, a releasing arm detachably attached to said member, means urging said arm in a direction reverse to that of the rotatable member, an adjustable stop for said arm upon its reverse movef ment, means for adjusting said stop to adjust the amount of liquid to be delivered in each cycle, and means whereby said arm can be released vfrom the rotatable member and coupled to the stop, for permitting said stop to be moved in either direction without hindrance from said arm.

34. 'Ihe combination as set forth in claim 33, in which the means whereby said arm is released from the rotatable member includes a releasable catch for the adjustable stop, and an interlock between said catch and the arm.

FRANCIS WALTER GUIBERT. 

